Question

7/5 × 5/7
Anyone who answer will be marked brilliant ​

Answer 1

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Step-by-step explanation:

Divisibility Rules (2,3,5,7,11,13,17,19,...)

A divisibility rule is a heuristic for determining whether a positive integer can be evenly divided by another (i.e. there is no remainder left over). For example, determining if a number is even is as simple as checking to see if its last digit is 2, 4, 6, 8 or 0. Multiple divisibility rules applied to the same number in this way can help quickly determine its prime factorization without having to guess at its prime factors.

Answer 2

answer is 1

solution is given in the attachment

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